Peairie



(No Model.)

P. KRIBR. HARROW COUPLING.

Pa fi'nted July 3, 1883. m v i UNITED "STATES PATENT OFFICE.

' PETER KRIER, OF MAINE PRAIRIE, 'MINNESOTA.

HARROW-COUPLING.

SPECIFICATION forming part of Letters Patent No. 280,382, dated July 3, 1883.

Application filed April 23, 18553. (No model.)

To all whom it may concern:

Be it known that I, PETER KRIER, a citizen of the United States, residing at Maine Prairie, in the county of Stearns and State of Minnesota, have invented a new and useful Harrow- Coupling, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to harrow-couplings of that class which are used to separably connect two independent harrows together when desired; and its object is to provide a simple, inexpensive, durable, and efficient device, that can be operated to connect or disconnect the harrows with facility and convenience, and without lifting the harrows from the ground, and that will admit of the harrows readily passing over stones or other obstructions.

In the drawings, Figure l is a top View, showing my improved coupling in position. Fig. 2 is a vertical longitudinal sectional View of the same. Fig. 3 is a transverse sectional View taken through the connectingring.

Referring to the drawings, A A designate two strips or plates, which are bolted, as at B, or otherwise secured to one of the beams G of each harrow D I), or barrow-section, as the case may be. The inner ends of these plates project some distance from the end of the beam 0, as shown at E E and at the extremity of these projecting ends each plate A A is provided with a projecting prong or 4 arm, F F, at each side edge, one arm project ing at an outward angle downwardly, while the other arm projects at an outward angle upwardly. These arms serve to prevent the plates from overlapping each other and prevent entangling of the coupling. Near the end of the projecting portions .E E of the plates A A are formed longitudinally-disposed slots, G G respectively, through which pass a connecting ring or loop, H. To provide for the disengagement of the two coupling-plates, the slot G is provided with a side opening, I, of a width equal to the diameter of the ring, and having a rib or projection, J, on one of its edges, to obviate accidental slipping of the ring through the said opening. The ring is provided with atransverse groove, K, corresponding to this rib, sothat by turning the ring around until its groove registers with the rib the ring can be readily slipped out through the opening I, and the disengagement of the coupling thus easily effected. In like manner the coupling of the two plates is formed by means of this ring.

The operation and advantages of my invention will be readily understood and appreciated. It is very simple and inexpensive in construction, and can be operated with superior convenience and facility. u

I claim as my invention' l. The combination of two independent strips or plates arranged to be secured to the barrow-sections, and provided at their inner ends with the longitudinally-disposed slots, and with the prongs or arms both projecting outwardly at an angle, and arranged at the side edges, one projecting above and one below, and a connecting ring or loop passing through the slots, as and for the purpose set forth.

2. The combination, with two coupling plates or strips arranged to be secured to the sections of the harrow, and each plate having a slot at its inner end, one of which slots is provided with a side opening having a rib or projection at one edge, of the coupling ring or loop having a transverse groove corresponding to the said rib, as and for the purpose set forth.

3. The combination of the two coupling plates or strips, arranged to'be secured to the sections of the harrow, and each provided with two prongs or arms projecting outwardly at an angle at its inner end, one arm projecting above and the other below, the said plates being also provided with theend slots, one of which has the side opening provided with the rib or projection in one edge, and the coupling ring or loop provided with the transverse groove corresponding to the said rib, as set forth. v V r In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

PETER KRIER. Witnesses THEo. BRURNER, NICHOLAS KRIER. 

